A simple probability question.

[EGO]

There is an 80% chance of event A happening, and a 70% chance of event B happening.

What is the chance that:

1)Only A happens.
2)Only B happens.
3)Neither happen.

Assume the events are unrelated. I can figure the chance of both happening, since that's just P(A)*P(B), which is 56%, but I can't figure the probabilities for the other possible scenarios.

Included math will certainly help. Thanks in advance.

[jay_shark]

1)0.8*0.3

2)0.2*0.7

3)0.2*0.3

P(AUB) = P(A) +P(B) -P(AB)
= 0.8+ 0.7 - 0.56
=0.94
P(AcUBc) = 0.2+0.3 -0.2*0.3
= 0.44

Ac is just the complement of A which is 20% .

[EGO]

I knew the answer would be simple. Thanks!